Visualization of World Population from 1970 to 2022


Understanding the Data:

The dataset contains population information on 234 different countries and territories within 17 variables:


Start by ensuring that every column is complete and contains no missing values. This can be done by counting the number of instances that occur in each variable column and comparing it with the known length of the dataset.

A quick and easy way to do this is by generating a bar chart.

Since every column contains 234 instances, we can assume there are no missing values in the data.


To better understand the structure of the data, we may wish to know how many countries and territories are being accounted for in each continent. This can also be done using a bar chart by grouping and counting the number of Country instances within each Continent level.


Visualizing the Data:

We can begin by looking at the total world population across the previous five decades to get to start to understand the change over time. Since the data already contains information on the Continent and Country or territory, we can use a filled area plot to see the total world population along with each continent's and country's contribution.

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- The world population was about 4 billion in the 1970's but is now nearly 8 billion, roughly doubling in the past five decades

The data contains two variables which have a clear link to one another as well as a population: Area (km²) and Density (per km²)

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Since the data contains information on the world population split by each country and territory's contribution, it may be easier to get a general understanding by visualizing each countries and territories impact by viewing the information on a choropleth map. This makes it possible to view the aggregated population data in a geographic way.

Lets start by looking at a map of the current 2022 Population:

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Next, viewing the same map as an animation over the past 50 years can help see if there are any obvious trends in population growth in specific regions across the globe while simultaneously being able to compare them with the rest of the world.

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Since roughly half of the current world population reside in China, India, and Pakistan alone, we isolate Asia to take a closer look at its changes over the past 50 years.

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Taking a closer look at each continents contribution to world population levels, we can start by looking at the 2022 Population and see the average population sizes of their corresponding territories and countries.

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Aside from the current world population numbers, inspecting average population sizes from the past few decades could help identify any apparent traits. From the data, we can pull the 2020 Population,2010 Population,2000 Population,1990 Population,1980 Population,and 1970 Population numbers and generate similar plots for reference.

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Aside from the average values, we can compare the total population sizes of each continent to one another as well as see their percentage level contributions to the total world population using a pie chart. For a baseline, we can first inspect the levels from the 2022 Population sizes.

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Also using the 2020 Population,2010 Population,2000 Population,1990 Population,1980 Population,and 1970 Population data, we can generate similar visuals for their total population sizes and see how certain continents and their overall contributions have shifted over time.

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After looking at each continent as a whole, we can identify which countries and territories have contributed the most and least to the current world population.

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We can try to determine if there are any changes in these rankings by looking at the most and least populated countries and territories of the past 50 years.

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